possibilities and path selection options in these dynamic and uncertain settings. The goal of this research is a better understanding of the impact of dynamic and uncertain environments on wayfinding travel possibilities. An integrated spatio-temporal framework, populated with barriers and requirements, models

of her/his/their action. The consolidation of shared meaning through cr ystallization of practices in spatio-temporal con gurations creates cultures, that is systems of values and beliefs informing codes of behaviour. There is no systemic dominance in this matrix of relationships. There are all layers

that achieve their QoS requirements through dynamically adapting to changes in the system state, environment, and workload. QoSMOS service-based systems translate high-level QoS requirements specified by their administrators into probabilistic temporal logic formulae, which are then formally and automatically

-time model checking represents a crucial research challenge. This paper precisely addresses this issue and focuses on probabilistic run-time model checking in which reliability models are given in terms of Discrete Time Markov Chains which are verified at run-time against a set of requirements expressed

installed, can reduce testbed costs by attaching multiple nodes per gateway. After illustrating how unreliable current solutions can become (regardless of the used sensor nodes, USB cabling, or gateway setup), a set of experiments led to a list of dos and don’ts in testbed deployment. Furthermore, a simple

The formal verification of finite-state reactive and concurrent systems against temporal logical requirements can be done by model checking, which has the advantage of being well suited for automation. However, reasoning about the correctness of systems using automated techniques places high

Automatic-repeat-request (ARQ) protocols are widely used in modern data communications to guarantee reliable transmission over imperfect physical links. The behavior of an ARQ protocol largely depends on a number of network parameters and traditionally simulation is used for their performance

in partial ful2llment of the requirements for the degree of

Using a priority preorder on requirements or specifications, we lift established property-verification techniques of threevalued model checking from single to multiple viewpoints. This lift guarantees a maximal degree of autonomy and accountability to single views, automatically synthesizes single-analysis

Abstract. We provide a formal model and a security analysis of the Private Billing Protocol. This formal analysis allowed us to spell out precisely the details of the protocol, the security assumptions as well as the expected security goals. For the formal analysis we used SATMC, a model checker